Pofessor Andrzej Deloff died on 24 June 2023 after a short illness of cancer. He was 92 years old.
The funeral will take place on 26 July at 13:00 at the South Cemetery (Antoninów, columbarium).

Memories of Prof. Sławomir Wycech
Andrzej Deloff a colleague from the Nuclear Theory Division and the Department of High Energy Physics of the IBJ, later NCBJ passed away in June at the age of 92.

He started his work when it was in vogue to study dispersion relations and the interactions of pi mesons and nucleons. An internship at CERN provided him with contacts in this field, but he soon turned to the study of strange particles: K mesons and Ʌ hyperons. These were good times for Warsaw physics; the discovery of hyper-nuclei and contact with our experimenters gave him a good field to work in, and here he achieved his best results. He was, and remained to the end, a proponent of phenomenological research completed by experimental verification; nevertheless, he also wrote a rather formal book entitled. "Fundamentals in Exotic Atoms". In the field of nuclear and atomic physics of strange particles, he collaborated mainly with physicists from Oxford and Guelph, Canada. In recent years he joined the ALICE experiment at CERN.

He spent his childhood in Warsaw and Poronin. The latter because his father - a well-known and respected doctor - was forced as a prisoner of war to take care of airmen in the Tatra region. He retained a sentiment for high mountains and tried to spend his holidays on glaciers. He graduated from the Józef Poniatowski Gymnasium in Warsaw and studied here. From family tradition, he acquired knowledge of how to deal with doctors, which he shared with us. He was also a valued adviser to us on computer matters, the use of numerical techniques and solving car problems. Life did not spare him, family dramas vexed him, his reluctance to recognise the hierarchical organisation of society did not help in many matters. He held on bravely while maintaining a gentle and peculiar sense of humour.